When a blockhead begins to act based on a tin foil hat, blue/light blue particles will emit between the action and the blockhead and the acted upon block will have an image of the tin foil hat superimposed over it. The blockhead will use the respective tool for the task. The hat will only plan one action at a time and may abort player-specified actions.

Thus the only "mind control" a tin hat resists is the influence of a player.

The blockhead will also eat and sleep when necessary, and place light sources when it is dark.

One can limit the blockhead's options while wearing the tin foil hat by enclosing it in a room containing only it and the block or plant. This could potentially be used for making a farm automatic, and the like.

When playing with multiple blockheads in single player, it is not unusual for there to be more blockheads than the player can keep constantly occupied. The use of a tin foil hat makes a blockhead self-directed, thus it will harvest and mine without being instructed. The tin foil hat can be removed to more easily allow any items it has collected to be transferred elsewhere.

In the world of The Blockheads, the only "mind controller" is the player of the game. When the user gives a blockhead a task, the blockhead will mindlessly obey. With the introduction of the tin foil hat came the introduction of a unique blockhead quality of 'free will' for blockheads, where their mind is not being controlled by a 'god', or 'The User of the Device', or 'Player', which is quite a charming and humorous perspective in the world of The Blockheads, where each blockhead is considered as a unique individual with free will who do not like us (players) controlling them.